Device and method for plastic forming of artificially submerged cavitation jet micro-parts

Abstract

The invention discloses a device and method for plastic formation of micro parts through manual submerging type cavitation jetting. The method comprises the following steps: enabling a working fluid to flow towards a pressurizing cylinder and a speed-regulating valve through an outlet of a three-way valve, and enabling the working fluid to enter a nozzle after the pressure and flow of the workingfluid are increased; opening a stop valve, spraying nano-scale abrasive particles in a micro-sized abrasive particle tank into the nozzle to be mixed with the fluid, and spraying the fluid out throughan outlet in the lower end of the nozzle; and introducing the residual fluid in the three-way valve to enter a casing pipe from another outlet of the three-way valve through a depressurizing valve. When uniformly mixed nano-scale abrasive particles and the fluid are sprayed out from the outlet of the nozzle and collide with the low-pressure fluid in the casing pipe, strong shear is generated, anda large number of vacuoles are generated and are sprayed to to-be-machined micro parts; and cavitation jetting is combined with the nano-scale abrasive particles, a mutual promotion effect is achieved, the cavitation is promoted, the plastic formation of the micro parts is promoted, the machined positions are not cracked, and the surface polishing and strengthening effects on a formed site of a workpiece are promoted, so that the device can meet the requirements on the strength, fatigue durability and the like of the workpiece.

Description

technical field [0001] The invention relates to the technical field of microplastic forming of micron-scale parts, in particular to an artificial submerged cavitation jet micro-part plastic forming device and method. Background technique [0002] With the rapid development of micro-electro-mechanical systems, the demand for micro-products with light, thin, short, small, and multi-functional characteristics continues to increase, which drives the development of metal micro-forming technology, and product miniaturization has become a development of industry and manufacturing. important trends. Due to changes in materials, structures, and scale effects, it is becoming more and more difficult to process and form micro-parts. On the one hand, it comes from the improvement of material properties, and on the other hand, it comes from the complexity brought about by the miniaturization of structures. [0003] At present, the processing methods for micro-parts mainly include: tradit...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an artificial submerged hollow spacer in order to overcome the shortcomings of the above-mentioned mechanical micro-stamping technology and laser micro-impact forming technology, such as high requirements for punch positioning and motion accuracy, limited jet strength, poor surface quality, and low processing efficiency. Plastic forming device and plastic forming method of chemical jet micro-parts

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